Monday, February 15, 2010

CAUTION: Multiplication before addition or subtraction.

Be aware that "they" like to dangle addition or subtraction in front of us like follows:

5 - 2(x + 7) = 11

It is very much tempting to subtract 5 - 2, isn't it? DO NOT DO IT... the order of operations requires that we multiply (or distribute) before subtraction. The solution follows:

Screen Capture

Use the Snipping Tool in Windows Vista for quick and easy screen captures. It is included, so to find it click the Start menu and type "snipping" in the search box.

Here is a link to more detailed instructions.

Saturday, February 13, 2010

Solving Linear Equations

Another video posted on YouTube. It seems that YouTube is more mobile friendly than blip. Here is another video test.

Stop Motion Tutorial

This is my first attempt at a stop motion video tutorial. Just a test really. I am solving a linear equation that happens to be an identity.

Wednesday, February 3, 2010

Copyrights Made Easy

The creative commons website offers easy to use tools for determining which attribution is best for you. Visit the site:

Click license, and after answering the questions click the Select a License button. It then shows which license is best and provides HTML that can be cut-and-pasted into your website as follows:

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License.

Tuesday, February 2, 2010

Free Digital Textbook Initiative Review Results

The California Learning Resource Network reviewed several free textbooks and compared the content to the current California content standards.  Have a look:

Free Digital Textbook Initiative Review Results